The SPOTT index: A proof-of-concept measure for tracking public disclosure in the palm oil industry oleh Philippa Oppenheimer, Elizabeth Clarke, Oliver Cupit, Izabela Delabre, Annabelle Dodson, Michael Guindon, Alexis Hatto, Joyce Lam, Leonie Lawrence, Clara Melot, Eleanor Spencer, Ezster Wainwright-Déri, Robin Freeman, Michael Hoffmann